ALASKA TRENDS.

Gasoline prices fluctuate in direct response to the price of the crude oil it's made from. Oh boy, do they fluctuate. Not so, however, the employment of workers who supply those fossil fuels. Not in Alaska, at least. The number of oil industry jobs has declined fairly steadily since the 2014 oil price crash, even though prices themselves have gone up, then down, then up again.

The oil and gas industry remains the primary economic activity of Alaska, no question about it. No question, too, that the industry looks much different today than it did just seven years ago, with half as many workers on the payroll.

Production has not shrunk by half, though. The volume of crude in the Trans Alaska Pipeline System is down, yes, but the decrease is closer to 8 percent than 50.

Clearly, the fewer remaining oil workers are more productive than ever, thanks to new tools and techniques. For example, this month's article "Eyes on the Sky, Ears on the Ground" describes advancements in remote sensing that help oil companies pinpoint and monitor their precious resources. By helping workers do more with less, technological advances reduce costs for exploration, development, and production, thus sustaining the industry as Alaska's cash cow.

Lower costs usually mean smaller crews, though, and in turn less work for the allied services that support...